======================== unified (from filesystem) ========================
                                         'bitrate'  '179.549'
                                        'duration'  '149'
                                          'artist'  'The Civil Wars'
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                                         'release'  'Barton Hollow'
                                           'title'  "C'est la mort"
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                                      'lastfmtags'  "['loved', 'indie', 'indie folk', 'acoustic', 'folk', 'singer songwriter']"
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                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '12'
                                            'date'  '2011'
                                        'comments'  ''
                                           'genre'  'loc-unsorted;ifs-songwriter-folk'
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                                             'key'  '10B'
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rest: ''

======================== rawer (from filesystem) ========================

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'TBPM' (BPM (beats per minute))                     '145.790'
'TCON' (Content type, a.k.a. Genre)                 ['loc-unsorted', 'ifs-songwriter-folk']
'TDOR' (Original release time)                      '2011'
'TDRC' (Recording time)                             '2011-02-01'
'TIT2' (Title/songname/content description)         "C'est la mort"
'TKEY' (Initial key)                                '10B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'The Civil Wars'
'TPE2' (Band/orchestra/accompaniment)               'The Civil Wars'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'sensibility music LLC'
'TRCK' (Track number/Position in set)               '3/12'
'TSO2'                                              'Civil Wars, The'
'TSOP' (Performer sort order)                       'Civil Wars, The'
'TXXX:ASIN'                                         'B004GY6DTS'
'TXXX:Acoustid Id'                                  '819d2eee-8558-43e8-a9b8-0f4fe9095488'
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'TXXX:MusicBrainz Album Id'                         '2edc3786-e006-4355-acff-e9037fe0b775'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '91dad7e7-0bf6-47e8-bd42-ef1fac32c729'
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'TXXX:Q-JZFKS'                                      '1'
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'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '3'
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'TXXX:discogstags'                                  ['folk, world, & country', 'folk']
'TXXX:lastfmtags'                                   ['loved', 'indie', 'indie folk', 'acoustic', 'folk', 'singer songwriter']
'TXXX:q-bass'                                       '3'
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'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
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'TXXX:q-other'                                      '2'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
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'TXXX:replaygain_track_gain'                        '+0.53 dB'
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'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'1799c1d1-5973-4076-899c-629ac775ec7e')

========================== row from database ==========================
                                              'id'  1506336
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/The Civil Wars/03 - C_est la mort.mp3
                                         'working'  None
                                         'bitrate'  180
                                    'duration_sec'  149
                                           'genre'  loc-unsorted;ifs-songwriter-folk
                                        'filesize'  3366288
                                           'mtime'  1642256554
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 03 C_est loc unsorted;ifs songwriter folk
                                      'tag_artist'  The Civil Wars
                                     'tag_release'  Barton Hollow
                                       'tag_title'  C'est la mort
                                             'bpm'  145.79
                                    'search_title'  'c':1 'cest':3 'est':2 'la':4 'mort':5
                                   'search_artist'  'civil':2 'the':1 'wars':3
                                  'search_release'  'barton':1 'hollow':2
                                     'search_rest'  '00singer':1 'c':4 'eos':3 'est':5 'folk':11 'ifs':8,10 'loc':6 'songwriter':2 'unsorted':7,9
                                    'search_combo'  '00singer':11 'barton':9C 'c':1A,14 'cest':3A 'civil':7B 'eos':13 'est':2A,15 'folk':21 'hollow':10C 'ifs':18,20 'la':4A 'loc':16 'mort':5A 'songwriter':12 'the':6B 'unsorted':17,19 'wars':8B
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  10B
                                           'quals'  ['Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-2', 'Q-OLDST-3', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', 'q-drums-1', 'q-other-2', 'q-vocals-4', 'q-mixbeat-1', 'Q-PIANO-3']
                                      'lastfmtags'  ['loved', 'indie', 'indie folk', 'acoustic', 'folk', 'singer songwriter']
                                        'tag_date'  2011
                                     'discogstags'  ['folk, world, & country', 'folk']

============================== file details ==============================
                                           'mtime'  1642256553.6386693  (2022-01-15 15:22:33)
                             'size'  3366288